young-



(No Model.)

C.. S. YGUNG 8u G. E. ]AI1\T'I']IR.

ELECT-RIG ANNUNGIATQR. y' l No. 380,010. PatentedMar. 27 18,88.

N. Pains uhbmALimagnpnnmwmxngm. mc.

` asheets-sh'eet 2.v

\ (No Model.) l

@Myne fainter',

5o to show the annunciator-bell.

s UNITED STATES PATENT OFFICE.

CHARLES S. YOUNG AND GWYNNE E. PAINTER, OF BALTIMORE, MARYLAND.

-ELEcTRlc ANNUNCIATOR. i

SPECIFICATION -forming part f Letters Patent No. 380,010, dated March27, 1888.,

Application filed June 3, 1887.- Serial No. 240,117. (No model) y To allwhom it may concern:

Be it known that we, CHARLES S. YOUNG and GWYNNE E. PAINTER,A citizensof the United States, residing in Baltimore, in the State of Maryland,have invented certain new y and useful Improvements in ElectricAnnunciators; and we do hereby declare that the following is afull,clear, and exact description of our invention, such as will enableothers skilled :o in the art to which it appertains to make and use thesame.

Qur invention relates to improvements in that class of electricannunciators in which a hand is employed to point to a number on adial-face corresponding to the number of a room or station from which acall is sent. It is especially designed for use in hotels.

In our device the operation of the annunciat'or is such that whenever acircuitcloser is 2o operated, say, in the room of a hotel the hand isreleased and carried by clock-workV until it is 'restrained by a detent,which is thrown out i to its path by the same operationwhich-accomplishes its release. The detentis 2 5 so located as to causethe Ahand to stop at a point where it will indicate the proper numberupon the dial. Attention is called to the movement of the hand by abell,which is rung at the time the circuit is closed. The hand remainsin the position to which it has been turned until a call is sent in fromsome other room, when it is released,.and the operation above set forthis repeated. Should a person wish to call a second time before theannun-` ciator had been made use of by any one else, he will,by closingthe circuit inthe usual manner, cause the bell to ring without movingthe hand. Our annunciator has also other functions, which will be fullyset forth in the specification. The means by which its various functionsarel accomplished are illustrated in the accompanying drawings, inwhich'- Figure 1 is asideelevation of our annunciator with one side ofthe inclosing-case removed. 4 5 Fig. 2 shows the dial and' pointer. Fig.3 is a vertical central cross-section on line w w of Fig. 1, looked atfrom the rear. Fig. 4 is a similar section looked at from the front,some of the 'parts being removed, the design being simply Fig. 5 isadiagram of thecircuits, the magnets, for convenience of illustration,being shown in thesame whether against the pole of magnet B ormagvertical plane,instead of being arranged around a common center, asthey are in practice; and Fig. 6 shows a detail. v

`Referring to the drawings by letter, A is a case inclosing the mainoperating parts of our annunciator. This case will usually be made ofwood or other insulating material, and when made of metal the operatingmetallic parts within the case will be insulated from it.

B B B2 B3 are electro-magnets supported in suitable frames or bracketswithin the case, and C C C2 C are-corresponding electro-magnetssupported in the same series of frames or brackets. The B magnets aresupported near the front of the case A, and the C magnets near the rearof the said case. The magnets B and Y C are supported at opposite endsof the same bracket, b, and are provided with a common armature, c,which is suitably pivoted in lugs on the bracket. Fig. 6 shows a ijatspring, d, bearing against the lower` end of the armature, so as to holdit in either extreme position,

net C. The arrangement of the magnets B 75 and C', B2 and C2, and B3 andC3 is the same as that of the magnets B and C, already described.

In the present drawings we have shown-only four magnets; but the numberis immaterial, as we might employ any convenient number within thecapacity of the inclosing-box.

It will be observed that the armatures of the various pairs of magnets(lettered c c c2 c3) all point to a common center and that their leversterminate at substantially equal distances from the said center. Nearthe end of each armature-lever is a platinum contact-piece, with someone of which a crank-arm, f, makes contact when the device is inoperation. For easy referencelthelarmature-levers are lettered,respectively, e e cz es. The arm f is attached to a shaft,'g, whichpasses through the front of the case A'and carries upon its outer .end95 the hand or pointer G. The hand and the: shank of the crank-arm arearranged to point in the same direction. Between the two the shaft gpasses through a clock-work case,l H, which is attached to the inside ofthe front wall of the case A. The clock-work is pro-V vided with asuitable winding-shaft, and when woundit is adapted Ato operatethe shaftgin thel direction of the arrow. The cranklarm'f ICO armf, the handGwill point in the directionM of the said magnet. In front of the saidmagnets, upon the outer face, are placed figures corresponding to thenumbers of different hotel-rooms or other stations. For example, in thepresent instance the numbers 1, 2, 3, and

4 are placed in front of the magnets B B B2 B3, respectively. It isevident,therefore,that if circuit-closers in the rooms 1, 2, 3, and 4 ofa hotel can be so connected up in circuit as to operate, respectively,the magnets B B B2 B3, then a person in any one of those rooms can throwout the proper detent into the path of the crank-arm, whereby thedial-hand will be made to point to a number corresponding to the numberof the room in which the operator is located. In order to make thisaction of the guest efficacious for calling purposes, it is of coursenecessary that a bell should be rung to call the attention of attendantsin the hoteloce, and it is also necessary that at every operation of theB magnets some means should be provided whereby the armature which haslast been operated should be withdrawn from the path of the crank-armand should therefore release the said arm. These functions are effectedby means of the electromagnetic bell I in Figs. 1, 4, and 5, and also bymeans of the C magnets through the medium of the circuits shown in Fig.5. Referring more especially now to that ligure,it will be seen that themagnets are shown arranged in the same vertical plane instead of beinglocated around a common center. The armatures are drawn by thisarrangement out of their proper relation to the crank-arm; but it is ofcourse expected that the said arm will make contact with the nearestarmature-lever that is operated by a B magnet as soon as it is releasedby the one which now detains it.

In Fig. 5, K K K2 K3 represent push-buttons located, say, in thedifferent rooms of a hotel. Iis the calling-bell, shown in somewhatdierent form from that which it has in Figs. 1 and 4. O is a galvanicbattery for operating the system. It will be noticed that the crank-armis represented as resting against the detent-lever e. Tracing thecircuit, now, from the battery O, it passes by wire 5 to the shaftg andcrank-armf. In Fig. 3 the wire 5, it will be observed, passes to abinding-post, P, and from there to the clock-work frame or casing H. Inpractice this is the way in which the circuit is connected to the shaftg and the crank-arm. From the latter the circuit passes by way of thearmature-lever e andthe armature c to the frame of the magnets B C', andthence through the magnet C to the wire 6, from which it passes back tothe battery through the push-buttons K K K K3, or, rather, through anyone of them which happens to be closed, and through the particular Bmagnet which is connected up between the wire 6 and the saidpush-button. The return-wire beyond the push-buttons-is designated bythe figure 7. The bell I is included in va shunt or branch, 8, betweenthe wires 7 and 6. V Suppose, for example, that the occupant of room 4presses the push-button K3. Then the return-circuit from Wire 7 willpass by way of the magnet B", the push-button K", and the wire 8. As aconsequence of the closure of the circuit by means of the push-button Ktwo magnets then are operated. The first is the magnet C', whichconsequently withdraws its armature and releases the crank-arm j', and

Athe second is the magnet B3, which draws out its armature into aposition where the levere will stand in the path of the crank-arm anddetain it as it comes along. After what has been said above, it will beunderstood that this action causes the pointer to indicate room 4 uponthe dial. Furthermore, the bell I will have been operated to indicate tothe ear the fact that a call has been made. If, instead of the occupantof room 4, a guest in room 2 should actuate the push-button K while thehand still pointed to 2 on the dial, the only result would be that thebell would be rung, indicating that the guest had again called-that is,the circuit would pass from the armature of the magnets B C through boththe said magnets, and the armature, being equally drawn in oppositedirections, would simply remain where it was.

It is apparent that our annunciator is capa` ble of serving the purposeof a hotel-annunciatorwithout any restoration of drops or any return ofthe hand to an initial point. Wherever the hand may be it can be turnedto any other point on the dial by operating the proper push-button. Incase two or more persons should actuate different push-buttons at thesame instant, the hand would be caught bythe magnet-armature which itfirst came to in its path, and if one of the persons should hold thecircuit closed longer than the others his signal would be the one whichwould be finally indicated on the dial. In any case there would be nofailure of the annunciator to respond to the call, and, as a matter offact, the liability of two persons in a hotel to make their call inexactly the same instant is quite remote.

It will be observed that the hand or pointer is connected directly withone pole of the generator, and that the detents are connected directlywith the respective O magnets, and that beyond the said C magnets thecircuit goes through any one of the B magnets whose circuit-closerhappens to be actuated. The battery is normally on open circuit, and thecircuit-closcrs are arranged in multiple arc between its poles. A

The bell I is made of approximately the IIO same resistance as any oneof the O magnets, so that the current will always divide and passthrough the bell. For this reason the bell will ring as long as apush-button is held closed, and its ringing will not depend upon thecon- .tactfbetween the crank-arm f and any one of the armature-levers.

, Having now described our invention, what we claim is- 1. In anelectric annunciator, the combination,with a generator of electricityand a number of circnit-closers arranged in multiple arc between thepoles thereof, of a hand or pointer forming apart of the return-circuiton one side, a series of conducting-detents for the said hand orpointer, the said detents be-A ing located, respectively, between pairsof electro-magnets, each detent being directly connected withA one ofits pair of magnets, and being also connected beyond the said magnetwith all the magnets corresponding tothe other magnet of the said pair,as and for the purpose set forth.

2. In an electric annunciator, the combinapath, as set forth.

Inwitness whereof we have hereunto signed and another detent will bethrown out into its our names in the presence of two subscribing 4owitnesses.

CHARLES S. YOUNG. GWYNNE E. PAINTER. Witnesses:

J oHN J. DUNN, WM. H. LEONARD.

